Physics - Current Electricity Question with Solution | TestHub
Three simple harmonic waves, identical in frequency n and amplitude A moving in the same direction are superimposed in air in such a way, that the first, second and the third wave have the phase angles and , respectively at a given point P in the superposition. Then as the waves progress, the superposition will result in
Options:(select one or more)
Answer:
Solution:
Since the first wave and the third wave moving in the same direction have the phase angles and , they superpose with opposite phase at every point of the vibrating medium and thus cancel out each other, in displacement, velocity, and acceleration. They in effect, destroy each other out. Hence we are left with only the second wave which progresses as a simple harmonic wave of amplitude A. The velocity of this wave is the same as if it were moving alone.